Observation of Galactic center in the sub-MeV gamma-ray band with electron-tracking Compton camera

Tomonori Ikeda, Toru Tanimori, Atsushi Takada +6

We report the direct detection of gamma-ray emission from the Galactic center in the 150-600 keV band using the electron-tracking Compton camera (ETCC), which has a wide field of v…